Apparatus and method for processing an audio signal and for providing a higher temporal granularity for a combined unified speech and audio codec (USAC)

US9552822B2 · kind B2 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• VOICEAGE CORPORATION · CA

Inventors

• Markus Multrus · Nuremberg, DE
• Bernhard Grill · Lautenbächle, DE
• Nikolaus Rettelbach · Nuremberg, DE
• Guillaume Fuchs · Erlangen, DE
• Max Neuendorf · Nuremberg, DE
• Bruno Bessette · Sherbrooke, CA
• Roch Lefebvre · Magog, CA
• Philippe Gournay · Sherbrooke, CA
• Stephan Wilde · Wendelstein, DE

Key dates

• Filing date: Apr 3, 2013
• Grant date: Jan 24, 2017
• Expiry date: Dec 9, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G10L2019/0012
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for processing an audio signal is provided. The apparatus has a signal processor and a configurator. The configurator is adapted to configure the signal processor based on configuration information such that a configurable upsampling factor is equal to a first upsampling value when a first ratio of the second configurable number of samples to a first configurable number of samples has a first ratio value. Moreover, the configurator is adapted to configure the signal processor such that the configurable upsampling factor is equal to a different second upsampling value, when a different second ratio of the second configurable number of samples to the first configurable number of samples has a different second ratio value. The first or the second ratio value is not an integer value.